ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
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TROUBLESHOOTING PROCEDURES
OPERATOR/CREW TROUBLESHOOTING PROCEDURES
THIS SECTION COVERS:
Cold Weather System
INITIAL SETUP:
TWPS Set Up
Maintenance Level
Operator
COLD WEATHER SYSTEM MALFUNCTIONS
Table 13. Cold Weather System Troubleshooting.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
1
Diesel heater motor does not
Safety control locked out.
Push and hold red reset button for 120
start.
seconds.
No power or low voltage at heater.
Check that the heater is plugged in.
Remote thermostat (if used) improperly
Adjust remote thermostat to a higher
set or defective.
setting. If heater still does not start, switch
the thermostat switch on the electric control
box to the "OFF" position. If the heater then
functions properly, notify Unit Maintenance
to replace the remote thermostat assembly.
Fan obstructed by mechanical damage or
Notify Unit Maintenance.
dirt.
Dirty or defective photocell.
Notify Unit Maintenance.
Defective overheat switch.
Notify Unit Maintenance.
Defective Safety Control.
Notify Unit Maintenance.
Defective motor relay.
Notify Unit Maintenance.
Defective motor.
Notify Unit Maintenance.
2
Heater will not ignite, but
Fuel tank empty.
Check level of fuel in tank. A minimum of
motor runs for a short time.
one gallon is required for proper operation.
Wrong fuel type.
Make sure fuel is one of the following: DF2,
DL2, or JP8.
Water in the fuel.
Check for water in the fuel tank. If water is
found, drain the tank and rinse with clean
fuel. Fill the tank with fresh, clean fuel.
Air leak at fuel filter.
Notify Unit Maintenance.
Defective or damaged spark plug.
Notify Unit Maintenance.
Defective transformer.
Notify Unit Maintenance.
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